add generator of sampled sinewaves

fd3e10b4 · Juan David Gonzalez Cobas · 81155117 · fd3e10b4
Commit fd3e10b4 authored Jan 30, 2011 by Juan David Gonzalez Cobas
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sampler.py sampler.py +19 -0

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--- a/sampler.py
+++ b/sampler.py
+#!  /bin/sh
+#   coding: utf-8
+# vim: tabstop=4 expandtab shiftwidth=4 softtabstop=4
+
+from numpy import linspace, pi, sin
+
+def sampled_sine(A, w, phase, C, fs, t0=0.0, t1=1.0):
+    samples = (t1 - t0) * fs
+    time = linspace(t0, t1, samples, endpoint=False)
+    wave = A * sin(w * time + phase) + C
+    return wave
+
+if __name__ == '__main__':
+    from matplotlib import pyplot as pl
+
+    s = sampled_sine(1, 2*pi, 0, 0, 8000)
+    pl.plot(s)
+    print 'samples = %d' % s.size
+    pl.show()